Pomological Watercolors - Pear Diseases and Damage

Watercolor Contents

Artist

Painting Date

Journal Number

Fruit Source - Image Comments (Cultivar Origin)

Arsenical poisoning on Kieffer fruit

James Marion Shull

06/29/1910

344

From Kalmia Farm, Woodwardsville, Maryland. "Undoubtedly due to settling and imperfect agitation."

Arsenical poisoning on Kieffer fruit

James Marion Shull

08/04/1910

372

From Kalmia Farm, Woodwardsville, Maryland.

Fire Blight - Flemish Beauty

Deborah G. Passmore

04/1895

"Hold Over" blight, painted 2/3 natural size.

Fire Blight - Howell, hold over blight

Deborah G. Passmore

4/1895

From Still Pond, Maryland, "hold over" blight painted 2/3 natural size.

Fire blight - inoculated Kieffer fruit

anon.

7/6/1891

"At three days moist chamber"

Fire blight - Kieffer stem

Miss. Mayo (?)

7/1890

Tree on Department grounds, July 1890. "Thjs was a result of inoculation with a pure culture of the top of a twig showing termination of the disease through resistance by the host and also showing girdled lateral twig."

Fire Blight - Kieffer tree

Deborah G. Passmore

From "the south" about 1898. Made from a photograph showing the ordinary appearance of twig and limb blight on the pear.

Fire Blight - LeConte shoot

?

7/1889

Blighted twig of LeConte artificially inoculated with direct material about 12 days earlier, July 1889. Note on print: "Lithographer - Please make the green slightly lighter."

Fire blight - young Kieffer fruit

R. Cowing

7/8/1890

Pear blight from inoculation on Department grounds July8, 1890. "This is one of the first successful inoculated fruits from pure cultures of the pear-blight germ isolated by means of poured plates. Kieffer pear. Cross section showing the spread of the disease and large cavities with gum or dried out about eight days after inoculation."

Lime-sulfur spray damage on Kieffer leaf

James Marion Shull

05/25/1914

786

From Kalmia Farm, Woodwardsville, Maryland.

Stigmonose disorder - Seckel

James Marion Shull

09/12/1910

394

From Kalmia Farm, Woodwardsville, Maryland.

Stony Pit Disease - Anjou Severe

James Marion Shull

10/11/1938

1791

Sample received October, 1938 from J.R. Kienholz, Hood River, Oregon.

Stony Pit Disease - Bosc Moderate

James Marion Shull

10/18/1938

1793

Sample received October, 1938 from J.R. Kienholz, Hood River, Oregon.

Stony Pit Disease - Bosc Severe

James Marion Shull

10/07/1938

1790

Sample received October, 1938 from J.R. Kienholz, Hood River, Oregon.

Storage injury - Bosc

James Marion Shull

04/16/1910

314

From Bear Creek Orchard, Medford, Oregon. Stored at Merchants Ref. Co, Jersey City, N.J. October. 22 1909 at 32 degrees. Removed April 4, 1910 and held in warm office till April 13.